1101143972 has 24 divisors (see below), whose sum is σ = 1966587000. Its totient is φ = 539364096.

The previous prime is 1101143971. The next prime is 1101143977. The reversal of 1101143972 is 2793411011.

It can be written as a sum of positive squares in 4 ways, for example, as 73685056 + 1027458916 = 8584^2 + 32054^2 .

It is not an unprimeable number, because it can be changed into a prime (1101143971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30854 + ... + 56162.

It is an arithmetic number, because the mean of its divisors is an integer number (81941125).

Almost surely, 2^1101143972 is an apocalyptic number.

It is an amenable number.

1101143972 is a deficient number, since it is larger than the sum of its proper divisors (865443028).

1101143972 is a wasteful number, since it uses less digits than its factorization.

1101143972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25535 (or 25533 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 1101143972 is about 33183.4894488208. The cubic root of 1101143972 is about 1032.6378398249.

Adding to 1101143972 its reverse (2793411011), we get a palindrome (3894554983).

The spelling of 1101143972 in words is "one billion, one hundred one million, one hundred forty-three thousand, nine hundred seventy-two".